Performance Analysis and Node Selection of Intelligent Reflecting Surface-Aided Visible Light Communication for Parallel Vehicles

Algorithm 1

The NNIS algorithm.

Initialize the interval between adjacent IRSs , the total number of IRSs , the selected number of IRS , and the number of mirrors in each IRS.

for

 ; ;

  for

    for

    for

      Calculate the position vectors of the transmitter, receiver, and IRS.

      Calculate the channel gain of each mirror according to Equations (8)-(9).

    end for

    end for

   Calculate the received power corresponding to each IRS Equations (10)–(11).

  end for

   Sort in descending order to obtain

   Calculate the received power when according to Equation (11).

   if

    ;

;

   else

;

    ;

   end if

   Output the total number of selected IRS nodes and the corresponding serial number.

end for